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1. 发明申请

WO2009088475A1 METHOD AND APPARATUS FOR CONFIGURING UNIVERSAL TRANSMIT ANTENNA FOR USE ON SPARE SATELLITE IN A MULTIPLE SATELLITE SYSTEM 审中-公开
标题翻译：用于在多个卫星系统中使用通用卫星的通用天线的方法和装置
公开(公告)号：WO2009088475A1
公开(公告)日：2009-07-16
申请号：PCT/US2008/014122
申请日：2008-12-31
申请人： XM SATELLITE RADIO INC. , DE BASTOS, Derek , NGUYEN, Duy
发明人： DE BASTOS, Derek , NGUYEN, Duy
IPC分类号： H04B7/06
CPC分类号： H01Q1/288
摘要： A system is provided for configuring a universal transmit antenna for a geostationary satellite that produces a near-equal effective-isotropic-radiated-power (EIRP) pattern, independent of the orbital location in which the satellite is positioned. In a satellite broadcast system employing spatial diversity with two satellites (e.g., satellites positioned at 85° West and 115° West), the universal antenna operates on a cost-effective in-orbit spare satellite since the spare satellite with universal antenna can be positioned at either satellite location, thereby saving in capital investment and in time to construct the spare satellite. Predicted combined availability due to the in-orbit spare satellite and one satellite having an optimized antenna is comparable to that achieved when optimized antennas are employed in both satellites for use in respective orbital locations.
摘要翻译：提供了一种用于配置用于对地静止卫星的通用发射天线的系统，其产生近似等效的各向同性辐射功率（EIRP）模式，独立于卫星定位的轨道位置。在采用具有两颗卫星的空间分集（例如，位于西西方向85°和西经115°的卫星）的卫星广播系统中，通用天线在经济有效的轨道备用卫星上运行，因为具有通用天线的备用卫星可以被定位在任何一个卫星位置，从而节省资本投资，及时建造备用卫星。由于在轨备用卫星和具有优化天线的一颗卫星所预测的组合可用性与在两个卫星中使用优化的天线以在各个轨道位置中使用时相当。

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